How can I edit the list of connections listed in Explorer when I map a connection?

A. A. When you select "Map Network Drive" from Tools menu
in Explorer and click the drop down box for the path, Explorer checks the
HKEY_CURRENT_USER\Software\Microsoft\Windows
NT\CurrentVersion\Network\Persistent Connections area of the registry for
a list of old/current drive mappings. To remove items from the list (or
add) perform the following:

In the right hand pane you will see a list of values a-z and each
value will have a value like "\\<machine name>\<share>"

To remove a map, select the letter associated with it and click DEL

You should now edit the Order value and remove the letter you have
just deleted.

If you wish to add a mapping select New - String Value and enter a
name of a-z (use one that is not in use) and press enter. Double click
on your new value and set to the share name, e.g. "\\johnmachine\d$"

Edit the Order value and add your new letter to the end of the
string.

Close the registry editor

Start Explorer and your new share or removed share will have taken
effect.